| Cite this article: | 金海银,张一祁,袁尧,等.箱涵式双向立式泵装置性能试验与流场分析[J].灌溉排水学报,0,():-. |
| JIN Haiyin,ZHANG Yiqi,YUAN yao,et al.箱涵式双向立式泵装置性能试验与流场分析[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Performance Test and Flow Field Analysis of Cube-type Bi-directional Vertical Pump Unit |
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JIN Haiyin1, ZHANG Yiqi2, YUAN yao3, YANG Fan2
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1.Chengjiang Agricultural Water Management Service Station of Jiangyin;2.College of Hydraulic Science and Engineering,Yangzhou University;3.Jiangsu Hydraulic Science Institute
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| Abstract: |
| 【Objective】Taking the box-culvert two-way vertical axial flow pump unit of Jiangsu Jiangbian Pump Station as the research object, 【Method】 the energy performance, cavitation performance and escape performance tests of the box-culvert two-way vertical axial flow pump unit model were carried out by means of physical model test method, and the internal flow characteristics of the pump unit were analyzed by means of numerical simulation technology. 【Result】 (1) the efficiency of box-culvert bidirectional vertical axial flow pump device is 57.24% (2) when the vane placement angle is -6 degrees and 60.77% when the vane placement angle is -6 degrees at 1.55 m. (3)Within the range of operating head (1.75 m~3.95 m), the critical cavitation allowance of axial flow pump does not exceed 8.0 m, which meets the requirement of minimum submergence depth. 【Conclusion】Through comparison and selection of guide vane body, the efficiency of pump unit with diffusion guide vane is higher than that with straight guide vane when designing flow. Under all operating conditions, the front streamline of flow field in box-culvert bi-directional intake channel is smooth, and at the blind end of bi-directional intake channel, the flow velocity is very small, which shows a slow return zone; the flow distribution on the outlet side is relatively uniform as a whole, and no undesirable flow pattern appears. |
| Key words: Pump device; axial flow pump; performance; numerical simulation; model test |
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